Intelligence 2010

Intelligence 2010 - Intelligence I. A. Measurement...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Intelligence I. Measurement A. Reliability: Consistent measurement E.g., Weight Scale Mental Measurements: SAT, GRE, GMAT, MCAT A. Validity 1. Content validity: The extent to which a test samples the behavior that is of interest E.g., Driving test for a driver’s license 1. Predictive validity: The success with which a test predicts the behavior it is designed to predict E.g., SAT scores and college success
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
History I. History A. Galton Eugenics: Breeding genetic superiority Abject failure Started the movement to quantify mental measurement B. Binet IQ test Original purpose was to identify children who were not up to speed so that they could get them in some remedial programs. C. Terman and Stern (Stanford University) IQ = Mental age/Chronological age 1. Assumptions Intelligence is a fixed, inheritable entity
Background image of page 2
History cont’d. 1912: Goddard: Identify mentally defective immigrants E.g., “What does a tennis court look like?” (English-only) 83% Jews, 80% Hungarians, 87% Russians, 79% Italians were “feeble minded.” US Army and WWI: Screen out mentally slow recruits Culturally biased 47% showed a mental age of 13 or younger Results: 1) from 1890 to 1915 the mental age of immigrants had declined and, 1) Source of decrease comes from Southern and Eastern Europe
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
History cont’d. 1924: Data were used as “scientific evidence” allowing US Government to limit immigration Used to justify segregation of African-Americans “Imbecile” = Sterilization without knowing and/or against their will. Ever called your roomate a(n): “Borderline?” = 70-80 IQ; “Moron?” = 50-69 IQ; “Imbecile?” = 20-49 IQ; “Idiot?” = <20 IQ
Background image of page 4
IQ Tests of Today Wechsler: Variety of sub-scales Verbal reasoning: What is similar about an apple, orange, and grape? Quantitative reasoning: Math problems Abstract/Visual reasoning: Why should someone wear a coat in winter? Working memory Composite IQ 1. Reliability Children’s scores do not correlate well with adult scores Teenage scores correlate very well with adult scores
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
IQ Tests cont’d. 2. Validity No agreement on one definition of what intelligence is Good measurement of school abilities I. Genes or Environment? Genetic evidence Twin Studies= High correlation French adopted children: From higher SES backgrounds > lower SES backgrounds, irrespective of the adopted home environment
Background image of page 6
IQ Tests cont’d. Environmental evidence Foster home= No genetic similarity yet high correlations among children reared in same home Adopted children in enriching environments = Higher IQ scores than those in impoverished environments Adopted children from low SES and adopted into high SES improve their scores from 10-15 points Children adopted into enriching environment improved IQ scores by 14 points over siblings who stayed in impoverished environment Both: Genetics are a Range with which the environment acts upon
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Bell Curve
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/22/2010 for the course PGS 101 taught by Professor Blan during the Spring '08 term at ASU.

Page1 / 41

Intelligence 2010 - Intelligence I. A. Measurement...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online